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1. WO1997038811 - INJECTION MOULDING PROCESSES, ESPECIALLY METAL INJECTION MOULDING PROCESSES

Publication Number WO/1997/038811
Publication Date 23.10.1997
International Application No. PCT/GB1997/001015
International Filing Date 11.04.1997
Chapter 2 Demand Filed 20.10.1997
IPC
B22F 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B22F 3/22 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
22for producing castings from a slip
B28B 1/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped articles from the material
24by injection moulding
B29C 67/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67Shaping techniques not covered by groups B29C39/-B29C65/93
24characterised by the choice of material
C04B 35/622 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B 35/632 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
626Preparing or treating the powders individually or as batches
63using additives specially adapted for forming the products
632Organic additives
CPC
B22F 1/0059
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
0003Metallic powders per se; Mixtures of metallic powders; Metallic powders mixed with a lubricating or binding agent
0059Metallic powders mixed with a lubricating or binding agent or organic material
B22F 2001/0066
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
0003Metallic powders per se; Mixtures of metallic powders; Metallic powders mixed with a lubricating or binding agent
0059Metallic powders mixed with a lubricating or binding agent or organic material
0066Organic binder comprising a mixture or obtained by reaction of more than one component other than solvent, lubricant
B22F 2998/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2998Supplementary information concerning processes or compositions relating to powder metallurgy
B22F 2999/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2999Aspects linked to processes or compositions used in powder metallurgy
B22F 3/22
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
22for producing castings from a slip
B22F 3/225
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
22for producing castings from a slip
225by injection molding
Applicants
  • APV UK PLC [GB]/[GB] (AllExceptUS)
  • CRANFIELD UNIVERSITY [GB]/[GB] (AllExceptUS)
  • STEPHENSON, David, John [GB]/[GB] (UsOnly)
  • ALCOCK, Jeffrey, Robert [GB]/[GB] (UsOnly)
Inventors
  • STEPHENSON, David, John
  • ALCOCK, Jeffrey, Robert
Agents
  • BARKER, BRETTELL & BOUTLAND
Priority Data
9607718.513.04.1996GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INJECTION MOULDING PROCESSES, ESPECIALLY METAL INJECTION MOULDING PROCESSES
(FR) PROCEDES DE MOULAGE PAR INJECTION, EN PARTICULIER PROCEDES DE MOULAGE DE METAUX PAR INJECTION
Abstract
(EN)
A method for producing a sintered component comprises moulding a compact which incorporates a binder, substantially removing the binder from the compact, and sintering the resulting debound compact. The compact is produced by an injection moulding process employing at least two different mixes (A, B), each mix comprising a preferably powdered binder and a powdered filler material. The binder comprises a polymer-based material. The filler material comprises a metal and/or ceramic filler material. The mixes are injected either sequentially or simultaneously into a mould (14) so that said first mix forms an outer layer of the compact and said second mix forms an inner layer of the compact.
(FR)
L'invention concerne un procédé de production d'un composant fritté, qui consiste à mouler un aggloméré contenant un liant, à éliminer sensiblement le liant de l'aggloméré et à fritter l'aggloméré résultant qui n'est plus lié. L'aggloméré est produit grâce à un procédé de moulage par injection qui utilise au moins deux mélanges (A, B) différents, chaque mélange comprenant un liant, de préférence sous forme de poudre, et un matériau de charge en poudre. Le liant comprend un matériau à base de polymère. Le matériau de charge comprend un métal et/ou un matériau de charge céramique. Les mélanges sont injectés soit séquentiellement soit simultanément dans un moule (14), de façon que le premier mélange forme une couche extérieure de l'aggloméré et que le second mélange forme une couche intérieure de l'aggloméré.
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